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Finding the Fourth Proportional to 767.75, 1,059.44 and 436.14

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Solution

The fourth proportional to 767.75, 1,059.44 and 436.14 is: 601.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    767.75 : 1,059.44 = 436.14 : x
  2. Step 2: Convert to fraction form
    767.75/1,059.44 = 436.14/x
  3. Step 3: Cross multiply
    767.75x = 1,059.44 × 436.14
  4. Step 4: Simplify right side
    767.75x = 462,061.98
  5. Step 5: Solve for x
    x = 462,061.98/767.75
  6. Step 6: Final answer
    x = 601.84

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.